Access Zoom or other meeting URLs

[keehyunpark]

Can we add another option to Open Event Locations? Currently we only use Google/Apple maps to open event locations.

Lots of meetings are now hosted online, and I typically save Zoom links to event location (or at event description). It would be really nice if I can open these links directly from calendar events using Command + Return. Thanks.

[deanishe]

See #90.